Conveners
AIP: Theoretical and Mathematical: TMP 1
- Margaret Reid (Swinburne University of Technology)
AIP: Theoretical and Mathematical: TMP 2
- Murray Batchelor (Australian National University)
AIP: Theoretical and Mathematical: TMP 3
- XiaJi LIU
AIP: Theoretical and Mathematical: TMP 4
- Archil Kobakhidze
We present a numerical model of an early universe analog using a Bose-Einstein condensate, including temperature effects and topological properties. This may provide an insight into the particle-antiparticle asymmetry seen in our universe.
Information loss in black hole evolution is one of the longest-running controversies in theoretical physics. However, the discordant properties of different generalisations of surface gravity reveal that the problem cannot be formulated self-consistently in semiclassical gravity.
Compactified extra dimensions are well motivated BSM candidates. I will talk about the behaviour of scattering amplitudes of Kaluza-Klein gravitons in both flat and warped extra dimensions and assess the range of validity of the low-energy effective Kaluza-Klein theory.
By adopting a Maxwell-Einstein picture of a (2+1)-dimensional superfluid it is predicted that vortex quasi-particles (kelvons) posses an intrinsic spin. We examine the possibility of implementing topological non-abelian geometric phases on such kelvon spins.
We demonstrate a logical no-go theorem on a version of the Wigner's friend thought experiment which strengthens previous device-independent no-go results and opens new questions on the interface of quantum foundations and modal logic.
In this talk, I will describe how the non-trivial topology of curved spacetime induces quantum tunnelling between vacuum states that profoundly affect the properties and interactions of elementary particles. Namely, I will argue that gravitational instantons cause combined parity violation.
We recently devised a weak-measurement model for calculating the relativistic Bohmian trajectories of photons. Here, I discuss an extension of this model to include relativistic two-photon interactions, and calculate the nonlocal Bohmian trajectories for photons in a position-symmetrised state.
We derive some Quantum Central Limit Theorems for expectation values of coarse-grained observables, as functions of hermitean operators of non-commuting variables. These open some pathway for an emergence of classical behaviours. We also obtain some nontrivial time-dependent differential entropies.
The interaction of solitary waves in continuous media described by Kadomtsev-Petviashvili type equations is studied. The theoretical concept of particle-like soliton interactions in two-dimensional media is developed and illustrated by examples.
We will be discussing the behaviour of the electronic order book in terms of its ingredients : arrival/cancellation time, waiting-time, inter-trade time. The London stock exchange data is used in this study and its analysis will be discussed.
Grassmann Phase Space Theory is applied to the BEC/BCS crossover in cold fermionic atomic gases to determinine the time/temperature evolution of Quantum Correlation Functions specifying the positions of fermionic atoms of opposite spin in single or two Cooper pairs.
A quantum ring model of same spin fermions is developed. Quantum Monte Carlo calculations are performed. Comparisons with analytical Hartree-Fock solutions are used to get an insight into the role of correlations.
In this talk I will describe recent progress on two particular N-state generalizations of the widely studied quantum Ising model -- the N-state superintegrable chiral Potts model and the Z(N) free parafermion model.
We study black hole thermodynamics in asymptotically de Sitter spacetimes, which is poorly understood owing to the presence of the cosmological horizon. We use a path integral approach to make equilibrium manifest, and study the resulting phase structure.
In spherical symmetry, only two classes of dynamic solutions to the semiclassical Einstein equations describe physical black holes, and their formation follows a unique scenario. To be compatible with their existence, modified gravity theories must satisfy several constraints.
We consider a relativistic UDW detector model with first-quantised centre of mass, which we compare to a full field-theoretic description. We analyse the transition rate to first-order in perturbation theory for different types of minimum uncertainty state.
Here we show that Lorentz invariance emerges phenomenologically in the new Quantum Theory of Time in a natural way, i.e. due to the Galilean transformation of the background T violating field.
We show that mass–energy equivalence must be included in models of a quantum particle interacting with an external environment in order to represent physically relevant scenarios such as atom-light interactions.
We use bandlimitation to express quantum fields as simultaneously continuous and discrete, showing that discrete fields posess continuous translational symmetry and taking us a step towards unifying quantum field theory with general relativity.
The Fermi polaron, a particle dressed by excitations of a fermionic medium, is a problem that arises in multiple contexts. I will discuss recent theory progress toward understanding the static and dynamic properties of such polarons in ultracold Fermi gases.
